问题补充:
27. The boy was busy doing his homework, onlyonce in a while to look out of the window.
A. stopping
B. to stop
C. stopped
D. having stopped
答案:
(答案→)A. stopping
B. to stop
C. stopped
D. having stopped
解析:可联系答案网客服索取此答案。
时间:2021-03-13 08:16:20
27. The boy was busy doing his homework, onlyonce in a while to look out of the window.
A. stopping
B. to stop
C. stopped
D. having stopped
(答案→)A. stopping
B. to stop
C. stopped
D. having stopped
解析:可联系答案网客服索取此答案。
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